CHAPTER 4 - MAINTENANCE & SPARE PARTS
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4.5 SELF TEST MESSAGES
For most types of failure, HeliTest will self-diagnose the
error, and the following messages will be displayed.
NOTE
The heater is tested continuously.
If the heater test is negative, the display will show as in
fig. 4-5.
H
e
a t e r
D
E
F
E
C
T I V
E
Figure 4-5
This message is displayed for 1 minute, then HeliTest
is switched off automatically. Perform the self test
procedure (see paragraph 3.2), then if the heater is still
reported "DEFECTIVE", contact the sales office.
NOTE
If a fault occurs during the self test procedure of the
sensor test, the display will be as shown in
fig. 4-6.
S e n s o r t e s t
S P R A Y N I T R O G E N
*
Figure 4-6
This message is displayed until the following action
(see Note) has been taken or the HeliTest is switched
off.
NOTE
- Take HeliTest away from helium sources.
- If available, spray Nitrogen (N2) or Argon (Ar)
on the probe until fig. 3-16 is displayed (within
15 minutes maximum).
- Repeat the self test procedure following
paragraph
3.2.
If the sensor still shows "SPRAY NITROGEN", contact
the sales office.
NOTE
If a fault occurs during the self test procedure of the
sensor test, the display shows fig. 4-7.
S a m p l i n g l i n e
F A U L T
Figure 4-7
This message is displayed for 1 minute, then HeliTest
is switched off automatically. To recover normal
operation, proceed as follows:
•
check and clean the dust filter at the top of the
probe and/or extension (see paragraphs 4.3
and 4.4)
•
repeat the self test procedure (see paragraph
3.2.1), then if the sampling line still shows
"FAULT", contact the sales office.
NOTE
If during start up, or operation, the battery voltage
decreases below 10.2 V, but is still higher than 9.5 V,
the display will be as shown in fig. 4-8 for 1 minute,
then HeliTest automatically is switched off.
B a t t e r y
O U T
O F O R D E R
Figure 4-8
Disconnect the battery unit, and recharge; if it does not
recharge after 12 hours, change it.